In your WebSocket route you can `await` for messages and send messages.

```Python hl_lines="48-52"
{!../../docs_src/websockets/tutorial001.py!}
```

You can receive and send binary, text, and JSON data.

## Try it

If your file is named `main.py`, run your application with:

<div class="termy">

```console
$ fastapi dev main.py

## 運行程式碼

所有程式碼區塊都可以直接複製和使用（它們實際上是經過測試的 Python 檔案）。

要運行任何範例，請將程式碼複製到 `main.py` 檔案，並使用以下命令啟動 `fastapi dev`：

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

import java.util.ArrayList;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;

import org.apache.commons.text.StringEscapeUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.net.URLUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.web.sso.SsoAction;

import com.google.common.escape.Escaper;
import com.google.common.escape.Escapers;

/**
 * {@code Escaper} instances suitable for strings to be included in XML attribute values and
 * elements' text contents. When possible, avoid manual escaping by using templating systems and
 * high-level APIs that provide autoescaping. For example, consider <a
 * href="http://www.xom.nu/">XOM</a> or <a href="http://www.jdom.org/">JDOM</a>.
 *

package schema

import (
	"context"
	"fmt"
	"reflect"
	"strings"

	"github.com/jinzhu/inflection"
	"golang.org/x/text/cases"
	"golang.org/x/text/language"

	"gorm.io/gorm/clause"
)

// RelationshipType relationship type
type RelationshipType string

const (
	HasOne    RelationshipType = "has_one"      // HasOneRel has one relationship
	HasMany   RelationshipType = "has_many"     // HasManyRel has many relationship

        goodCertificate.certificate,
      )
    server.useHttps(socketFactory)
    server.enqueue(
      MockResponse.Builder()
        .body("abc")
        .addHeader("Content-Type: text/plain")
        .build(),
    )

    // Make a request from client to server. It should succeed certificate checks (unfortunately the
    // rogue CA is trusted) but it should fail certificate pinning.

import static org.opensearch.common.xcontent.XContentFactory.jsonBuilder;

import java.io.IOException;
import java.nio.charset.Charset;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Base64;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.TimeZone;

  private val maskCursor: Buffer.UnsafeCursor? = if (isClient) null else Buffer.UnsafeCursor()

  interface FrameCallback {
    @Throws(IOException::class)
    fun onReadMessage(text: String)

    @Throws(IOException::class)
    fun onReadMessage(bytes: ByteString)

    fun onReadPing(payload: ByteString)

    fun onReadPong(payload: ByteString)

    fun onReadClose(
      code: Int,

        //if no start/end dates set, check if an input element contains initial values
        if (typeof options.startDate === 'undefined' && typeof options.endDate === 'undefined') {
            if ($(this.element).is(':text')) {
                var val = $(this.element).val(),
                    split = val.split(this.locale.separator);

                start = end = null;

                if (split.length == 2) {

                        for (final String name : metadata.names()) {
                            final String lowerName = name.toLowerCase(Locale.ROOT);
                            if (lowerName.contains("comment") || lowerName.contains("text")) {
                                final String[] values = metadata.getValues(name);
                                if (values != null) {
                                    Collections.addAll(list, values);